Plastics are astounding discovery of man and has become an indispensable and inseparable
part of a common man‟s life. The disposing off of several existing forms of plastics in nature has always
been a key matter of concern to man. Polyethylene terephthalate, commonly known as PET is commonly
and widely used for developing plastic bottles which in turn are consumed for packaging of different
kinds of beverage products packaging. In spite of its various uses, there are issues of its biodegradability
which poses a strain to environment. Plastics are one of such products which are littering the oceans and
environment. Hence there is a dreadful requirement of some solution to effectively solve this problem of
disposal to reduce the environmental strain. The researchers are trying to incorporate one waste product
or the other into concrete so that it can help in a dual way- decreasing the strain on environment and the
effective utilization by enhancement of various mechanical properties of concrete. Research studies have
made it quite clear that the PET waste has the capability to enhance various parameters of concrete which
is a far better option than sending it to landfill. The research studies on PET fibers have also confirmed
one more thing that these can be more effectively utilized by modifying the shape of fibers and their
bonding properties. The present study is focused on reviewing the use of various aspect ratios(length to
breadth ratio) and shapes of plastic fibers in concrete